Blocking of first- and second-order autoshaping in pigeons

In Experiment 1, the development of autoshaped pecking to a keylight signaling food was blocked if the keylight was presented only in conjunction with another stimulus already established as a signal for food, even though the blocking stimulus (either an overhead light or a train of clicks) never elicited pecking itself. In Experiment 2, pigeons came to peck a white keylight which signaled the presentation of a red keylight which had earlier been established as a first-order signal for food, but this second-order autoshaping was blocked if the white keylight was presented only in conjunction with the houselight or clicker which had previously signaled the presentation of the first-order stimulus. Second-order autoshaping was thus blocked in the same way as was first-order autoshaping.     

Assessing Children Who Cannot Be ‘Tested‘

The Scottish Low Birth weight Study was set up to follow the developmental progress of all children born in Scotland in 1984 weighing less than 1750 g. At 4.5 years, 636 children (71%) of the original cohort were still alive and 611 (96%) of these were assessed by a team of community child health doctors. Some children were found by them to be impossible to test using the standardised tests selected for the project. This paper describes adaptations which were made to the standardised tests to render them more accessible to children with specific difficulties. The modifications made enabled 27 children who could not initially be tested to complete some or all of the assessment procedure. It is suggested that inclusion of the assessments of children who retain intact skills despite being constrained in specific areas affords a more accurate measure of long‐term developmental handicap.     

Locomotor activity and exploration: The use of traditional manipulators to dissociate these two behaviors in the rat

An apparatus designed by Berlyne was used to dissociate locomotor activity and inspective exploratory responses with the aid of traditional manipulators. In this apparatus, novel and complex stimulation increased exploration but did not affect locomotor activity (LA), d-amphetamine (1.5 mg/kg) increased LA but decreased exploration. These findings provide a double dissociation of the behavioral components. In addition, low intrasubject correlations for the two behaviors were demonstrated. Results are discussed with reference to the need for simultaneous separate measures to obtain valid indices of exploratory behavior and LA.     

‘Instead of “closing down” at our ages … we’re thinking of exciting and challenging things to do’: older people’s microadventures outdoors on (e-)bikes

ABSTRACT

This paper explores how people aged 50 and over, who were returning to cycling as part of an 8-week health and well-being trial, created their own cycling microadventures. Applying a stage model of the process of adventure to qualitative data generated from personal diaries and focus groups, we examine how older people anticipated and prepared for their microadventures, the challenges and discoveries they experienced, the benefits they gained and how electrically assisted ‘e-bikes’ can provide further opportunities for adventure. We conclude that cycles are a mode uniquely placed to facilitate microadventures and that e-bikes, in particular, offer further potential to enable older people to (re-)connect with place and other people. But while this type of activity can provide benefits in terms of health and well-being, we argue that more supportive physical and social infrastructure is required to provide opportunities for more people to undertake microadventures close to their homes.     

Teaching Cases in a Virtual Environment: When the Traditional Case Classroom is Problematic

The rise in interactive digital media has catapulted faculty‐student contact abilities from the traditional Web 1.0 model to a post‐Web 2.0 world where students and faculty can have much more interaction in classroom exchanges. Since business cases have long been a pedagogy of choice among professors concerned with training the next generation of decision makers, the intent of this exploratory teaching execution was to gain insight into the case teaching experience in Second Life (SL). SL is a virtual world developed by Linden Lab that enables its users to interact with each other through avatars (virtual representations of the self). While online classrooms in SL are not new (a number of universities throughout the world have set up virtual campuses), business education scholarship is lacking as related to the use of virtual worlds for educational purposes. The aim of the execution was not to suggest that SL case teaching should displace the traditional case classroom interactions. Rather, the exercise found that a case‐based class can be held and attended independent of time, distance, and location should the need arise. Case teaching in SL offers an availability alternative or supplement to the traditional case teaching and learning approach.     

Effect of floor conditions upon frictional characteristics of squash court shoes

Vertical (FN) and horizontal (FH) forces were recorded while four vertically-loaded court shoes were dragged horizontally across six types of floor surface. Variation in coefficient of limiting friction (FH/FN) between floor surfaces was greater than that between shoes. Squash strokes were also performed on the same surfaces during which FH/FN was calculated. Slips occurred on some surfaces either at heel contact or upon attainment of full-sole contact. It is concluded that the coefficient of limiting friction obtained during full-sole contact with the floor is a suitable means of distinguishing between tractional qualities of shoes. Alternatively, this measure is an inadequate predictor of the likelihood of slips in the game of squash racquets. Dusty floor conditions produce poor traction as does a damp sealed floor. As sweat droplets are unavoidable in the game, floors sealed with urethane represent a significant hazard. Bare, clean, wooden flooring which can absorb moisture represents a better surface than a sealed floor from the point of view of traction.